Type II or NELG?

I can't seem to find a definitive distinction between a galaxy with a
type-II narrow-line AGN core and a so-called NELG ("narrow
emission-line galaxy"). NELGs seem to have gone out of fashion
without anybody publishing them in recent years. Type-IIs have a
chequered history in that different researchers defined them in
different ways for a long time, although nowadays they are universally
regarded as narrow-line equivalents of AGN.

So in my quasar publications I make a distinction between broad-line
QSOSs and AGNs in that the latter are seen inside galaxies and the
former are not (never mind the transitional ones for now), but the
narrow-line type-II objects are not so divided. However, both kinds
are seen. To be consistent I should divide them as well.

It's naturally tempting to designate NELGs as type-II emitters within
galaxies -- it would make use of a well-known classification which has
sort of dropped out of use. Does anyone know a good reason why this
would be a bad idea, whether different forbidden lines or whatever?